Neil realized he didn’t have to wait for interviewers to ask him questions, he could just start recording and nobody can possibly interrupt him ever again
@@edtrine8692 Technology Connections already covered this problem. Just install heaters on the LED traffic lights that turn on when the light is covered in snow. Sure, it'll use more power than incandescent bulbs when it snows, but you then save 90% of power usage when it doesn't snow which is most of the time.
They have their place in the home for sure. But on vehicles, I agree that light bulbs that don't heat up the headlight housings much are inferior. Especially considering it doesn't change your fuel bill, unlike how light bulbs can change your household electric bill. I'd just rather have snow melt capabilities in the cars.
LED bulbs do also generate some heat, just not nearly as much. Sometimes some of them do generate enough heat to cause them to die an early death, compared to how long they can live if that heat is properly extracted from the package and dealt with.
It takes forever for them to warm up enough in cold weather. I know what you mean. I would have to turn on a light long before I needed it just to illuminate the area I needed. Yeah, that technology isn’t where it should be yet. It’s like, keep working on it and maybe I’ll see the advantages. Have you found that too?
@@gailcapshaw5772 Are you sure you're not thinking of CFL bulbs? Generally speaking, the cooler the environment, the greater an LED's light output. This quality means that LED lighting actually performs well in cold temperatures. In fact, these lights will turn on instantly in cold temperatures, as the cold does not affect them.
Neil implies that LED bulbs are 100% efficient, but not true. They produce 9-10 times the light output of an incandescent bulb for the same power, but do have some overhead in the conversion from high voltage AC to low voltage DC. The actual LEDs operate on 2-5 VDC, rather than 100VAC or more.
Plus the old light bulbs were quite valued for their heat output by people--and chickens--in cold environments. So the long wave IR wasn't always useless.
we are only just scratching the surface of the IR health benefits old bulbs had. LEDs while more efficient emit high frequency EMFs. They are better than CFLs but... two steps forward, one back.
A plain heater is more efficient and durable... chickens also don't like not to be able to sleep longer than 20 minutes. Get dark, IR bulb, and chicks sleep at night instead of suffering "passing-out naps".
Though it wouldn't be ethical, research could be done to discover the long term potential harm of using microwaves to heat the humans in a home. Very inexpensive. Perhaps a video could be done on this soon. It's an old idea that couldn't be tried, perhaps experiment in a zoo, a prison, or a totalitarian regime?
But you still use your television your internet router which is always on You charge your phone maybe twice a day You play video Games And everything in your kitchen is electronic the coffee maker the refrigerator the toaster 😂😂😂
But you paid double to AC the heat out of the house in summer. And a heat pump is again so much more efficient at heating the house (90% vs 400% efficiency considering electricity)
Heat from a bulb isn't enough. Also it would make you a lot more uncomfortable in summer. Also resistive heating is much less energy efficient than heat pumps.
The heat from incandescent bulbs is not wasted if you live in Minnesota in the winter. In fact in those cases, the incandescent bulb is 100% efficiency… it provides needed light and needed heat.
There are downsides, the light from led bulbs stop natural melitonin prodution so they ruin nightime routines required to get good sleep (bad for those of us with sleep disorders) but they do use much less electricity & are much cheaper to run, the old style lightbulb lasts much longer outside, if you live in a place that the temp can effect its lifespan. We had an old style bulb as our porchlight (three bulbs in ten years) but the led bulb stopped working after a couple months because of the lack of heat it produced.
We use incandescent lights in the pump house and we actually need that infrared to keep the pipes from freezing. The present lack of incandescent bulbs is a pita.
Yea the guys not that bright still catching up with society. Then talks about light bulbs like uts something he himself contributed because he's never actually contributed anything to modern science other than his lobbying
@@drabkebabit adds up in the winter when you need artificial lighting and heat the most. Heck I live in a mild cold climate and we used a perpetually on incandescent bulb to keep our pump house pipes from freezing.
@@drabkebabagree, the most efficient way of heating in winter is firing up your early 2010s gaming computer. And in Russia, people live in data centers in the winter
Most of the world experiences Summer though. At what point is the additional energy used by the cooling system more than the energy saved by the heating system
Let's say incandescent bulbs are 100% efficient in winter. But heat pumps are 400-650% efficient winter. And they can be used as ACs in summer. There's no use for incandescent bulbs in summer.
Incandescent 40W bulbs are used in ovens and in older refrigerators to defrost the coils. They are still sold as they can’t be replaced with LED light bulbs.
Thankyou for this. You’re correct. All stoves use that 40watt clear bulb. I use those in the lamps. It has a look that’s very pleasing. Now an LED is great to read book and newspaper by, but most of our reading is done on the computer.
@@T-REX677 Thats nonsense. Nobody can hack normal LED lights. If you pay extra for a smart light that can be remote controled, i can be hacked. But then your argument is like buying a car with a trailer and then complain about the trailer.
"Easier on the eyes"? You can get LED in either cool or warm tones... or even selectively switchable. Incandescent is also an *inefficient* source of heat that isn't wanted or needed all year. In the summer, part of any home AC cooling would be to offset the heat from the incandescent bulbs. The LED bulbs themselves give light for on average 25 times as long (25,000 hours vs 1,000 for incandescent) That is 3 years of all day, every day for the LED bulb. So, it can be justified just based on replacement frequency. It's easily worth the extra upfront cost. Technology advances... LED are the next step for lighting.
He still explaining light related subjects and we are sitting in the dark for a month now. He has the light bulb on his hands. So we have to wait. 2 people have starve to death. The rest of us are thinking about eating them. The smell is awful. But now we now about neutrinos.
On cars and trucks that heat can be very beneficial. LED lights do not produce enough heat to melt snow that accumulates on them. Take note on a snowy day. Vehicles with LED lights suffer the most degradation in visibility because the lights get covered.
In a moderate cold country, like The Netherlands, the warmth of an old-fashioned lightbulb wasn't total waste: it actually helped to warm the house. So now we have more effective lights, but we also have to turn up the heating a bit.
Basically that's true, but the heat-energy produced by the light bulb normally wouldn't be enough to make a big difference. You could also use a heat-pump/AC to heat your house and have 4x the efficiency of a light bulb 🤔
I used to live in a place with no heat during very cold northern winters. I hated LED light bulbs in the winter because they didn't put off any heat. The old lights helped add a tiny bit of heat to my room. I loved the LED lights in the summer as I didn't have an effective way to cool the place down either. I would switch out the lights depending on the time of year it was. It was not my place and I had no way of fixing all the issues there and finally ended up being able to move after over 7 years of no heat among other serious issues. I couldn't even plug heaters in or I'd blow the power. I could have a heating blanket but that was it.
Randomly sees neil in the forest "Omg, neil im a big fan, selfie?" "Do you ever wonder why the old lightbulbs get hot and the new led lightbulbs dont??"😅
If you think about it; we need to heat are homes and any thermal energy emitted by incandescent light bulbs will slightly offset the required energy to heat a living space buy conventional means. So in the winter time incandescent light bulbs don't technically waste energy.
I had a first generation EZ Bake Oven when I was a little girl in the 1960s. It used an incandescent light bulb to heat the oven and bake little cakes and brownies.
That IR sure was handy keeping the inside of a pumphouse above freezing or keeping chickens alive during a brutal winter. The quest for efficiency is a pita in these cases.
@@vladimird5280Neil's a physicist. That's his specialty. Yet he runs his mouth as the know it all. If were speaking of physics I would be a fool to ignore. Yet, on social sciences with Neil loves to spout his opinion. It is nothing more than that. Neils opinion. Yet because of his physics background far to many fools take it for fact. It's fun to listen to his opinion. Just don't always take it for fact.
I think I saw an example of this difference with LED traffic signals during winter snowstorms. Snow would build up and block the newer energy-efficient signal lamps, while the old incandescent ones would melt the snow off themselves.
@@commit7059 Exactly! My observation (and being an electronics professional since the 1970s) came before I saw that on _Technology Connection's_ channel.
@@jumpjump-oz2pr They do, actually. There's typically a sun shade sticking out above each lamp to help for better contrast between on and off. But snow tends to blow around and sort of collect into miniature drifts on things, including the lower part of the light housings and around the lenses. I also think the LED lamps were originally retrofitted into the same housings that the incandescent or other technology lamps used; they're gradually redesigning them to work better with LEDs from the start.
No you don't. I've got my roses and tomatoes in a grow tent with just LED lights. You're good without them unless you just need the old bulbs for heat. Light is light, and plants use simple light for photosynthesis
@@kellydavis6316y know u can just buy IR red heating leds/lamps they exist they re also used for containers of exotic animals that need more heat than the places you put them in, like iguanas or some snakes
It wasn't completely useless! On cold nights in Michigan I would turn down the furnace and snuggle up under my comforter and read a book near a warm incandescent light bulb. It was delightful.
Yep, if you still have power and your furnace fails , a 100 watt bulb in a confined (insulated) space can warm it up . Under a comforter, in a "table fort" even sitting in the bottom of a small closet etc. I suppose you could have swapped out the lightbulb under the comforter for an electric blanket which would do about the same thing energy wise but with out the added benefit of reading light..
The same way you could unscrew an old lightbulb without waiting for the glass to cool off. Just avoid to touching the hot parts directly. For old bulbs use an oven mitt or a towel or any basic pair of gloves. For LEDs just set the bulb down and let it cool down. There's no need to let the base cool off before removing it.
1/2 hour? a few seconds seems to be all they need. There's a 60W equivalent right next to me which has been on for several hours, and its temperature is just a little warm. I can grab it and unscrew it while it is on.
That's the DC power supply making the heat. They use inefficient garbage circuits to cut manf costs and to ensure the bulb eventually dies and forces you to replace them (IE, buy more).
@@meeponinthbit3466 yeah, i work maintenance and the package may say lasts ten years but never in reality. The diode may last that long but the cheap electronics never will and yes, that's what gets hot.
In the summer though, you need more energy to cool that extra heat generated by the lights that yoi don't want. There are other ways to heat without using light bulbs that are also just as efficient.
@real100talk5 light bulbs are not a good application for summer or winter. If you want the heat, you are wasting the energy of the visible light they produce. If you want the light, you are wasting energy in the heat they produce.
In some areas of the country, electric utilities no longer talk about conserving energy because LED lights have cut the consumption rate so much, that they are selling excess electricity to smaller utility companies.
Even things plugged into outlets that aren't "on" are using electricity. Unplug anything that is not in use. Like phone chargers, and other things that are sitting in an outlet not being used until you need it. And think about anything else electricity wise that may be running most of the day that you can turn off. This has helped me. May help you as well.
Thank you sir for this simple explanation - I was wondering about this , I came across this video while trying to understand lumen and kelvin ratings of a bulb to figure out the right bulbs to use at home
but dont worry those expensive bulbs that are worse for the environment to produce and dispose of, and aren't any better to use, well they're "saving the world" by all that nasty climate change incandescent bulbs cause, ya know!?
The Amish are the greatest adapters to Solar; but their electrical needs are about Necessity, &use something like 30% ov a ‘Standard Household.’ Blame Capitalism allowed free reign from about 1980 onwards &the need to destroy ‘Socialism’ in whatever form.
All heat you feel is infrared be it from a fire, electric heaters or incandescentlight bulbs, it's the same. If you want head best to use a heater and if you want light, best to use an LED bulb.
Incandescent bulbs are great for heating small spaces. A 40 watt bulb turns my stove's oven into the perfect proofing box. There are other heating applications too.
@@SilverEagle85that can’t be true. Producing heat with bulbs is just electrical resistive heating which is basically the most expensive way of heating an area. Even if they used electrical resistive heating the cost would be even, not increased. The math can just never work out that switching to led’s and uppjng the heating to compensate works out more expensive in total. At worst it would be the same
Google is your friend. A simple search shows you an incandescent light bulb can reach 500°. Multiple lights will have an effect on heating/cooling. My sister had an easy bake oven growing up. Are you familiar with how they heat?
@@SilverEagle85 But that is still electric resistive heat. No matter what it is still the most expensive form of heating. So switching to bulbs that don't get hot and turning up the heating to compensate will always be cheaper if the building uses a furnace, boiler, or heat pump. or the same price if the building used resistive heat. There is no way for your total utility bill, Electricity + gas, to go up by switching to LED's. It just is not possible.
Very true but one little detail missing here is that LED bulbs do generate heat via the module which is absorbed by its heat sink (the metal frame before the globe) and then the heat dissipates. That’s why when you touch the globe of the bulb it isn’t hot, but if you touched the heat sink just below the globe while unscrewing the bulb immediately after turning off the light, you’ll scorch your hand.
And the cheaper the bulb, the inferior the heatsink, the hotter the surface, and the shorter the lifespan. I have older LED bulbs with a chunky heatsink illuminated 24/7 for 3 years now. Heat sink barely gets warm.
I like to imagine a guy was lost in the park while taking a stroll and when he asked for directions Neil DeGrasse Tyson started saying this to him out of context.
An old lightbulb heats up the filament until it glows. An LED has two or more different materials next to each other, where one has extra electrons and the other one has somewhat far away gaps for the extra electrons, so that when the extra electrons jump, they release a specific amount of energy, which is released in the form of a specific colour photon (light). At least that's what I remember, I might be entirely wrong.
I remember growing up in the 80's, there were 100W lightbulbs in every room of the house. As kids, we'd used to leave lights on all day and night without a care in the world; however, as an adult with their own home and family, I totally understand and sympathise with my poor parents at why they used to constantly yell at us for leaving lights on...
I wish i had someone like this in my childhood growing up, it would've made a positive impact in my life. Now i would like to be one for others if i'm qualified. I'm sure Neil has good day everyday just by doing this :)
You did. The 90s had Bill Nye The Science Guy and Beakman's World, and before that the 80s had Carl Sagan, and before that from the 1950's through the 80s we had Mr. Wizard. Neil is carrying on that grand tradition of education through entertainment.
Back then was Totally Different, the access to those ppl was limited, they were on TV only & just once a week. What i meant was the real person close to me who i can communicate back & forth such as teacher in the class. Tho im not complaining bcoz i believe very few ppl had that, i just Wish lol
I switched to all LED's years ago but have discovered there are still a few applications where I need an incandescent bulb so I'm fortunate in that I never discarded my old stock of those bulbs. Places like the garage in a cabinet where I keep aerosol cans of everything from paint to WD-40 benefit immensely from having a lit bulb inside the cabinet for its warmth as my garage is unheated 99% of the time. Also in electronics work on antique radios where I use a dim bulb tester to check for shorts when first powering an old radio up. Even my bedroom still has one now as there are days when it's too warm to justify turning on the heat. That bulb will keep my room a bit less chilly and is welcome to stay lit until spring, lol.
Or if you want the explanation from an electrician: old lightbulbs use very thin filament of tungsten, encased in a glass bulb filled with inert gases so that the filament doesn’t oxidise and disintegrate. The electricity causes the wire to heat up and glow, a portion of that energy is turned into light. While with led also short for "Light Emitting Diode" are illuminated solely by the movement of electrons in a semiconductor material. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. And for those who paid attention in school know that photons are what we call "light"
I make bigass LED lamps for harbors and stadiums, floodlights and such. THOSE versions get hot and use some watts 😂 but still not nearly as much as the old bulbs.
You can get 'that band of light' without using light bulbs. Makes more sense if you want heat to use a heater. If you want light to use light that don't also produce so much heat.
For those of us in the north, that 'heat' energy was actually part of what kept us warm. The porch light and the crawl space light that we left on in the winter to keep the space a wee bit warmer and the pipes from freezing was important and now requires we run new circuits for powered pipe heating cables to augment the insulation (and usually melts the insulation over time).
They also used to melt the ice off of your car's headlights and taillights. I grew up in the south, but I remember holding my hands near the lamp to heat them up after playing outside that one time a year that it would snow.
All of these new "energy saving" light bulbs, don't last long, either after you put them in. They cost a ton of money as well!! So, after you buy them and install them, it's not long when you are replacing them. So, in the long run, you are saving energy but not money, I would bet!!
@@jamesspalten5977 Uh, nope. You are dead wrong. LED lights last on average 20 times longer, and often go up to 100x. In fact, incandescent light bulbs were standardized by a literal mafia, known as the Phoebus cartel to last shorter than they should, a form of planned obsolescence, so that people would buy more. Today, the average 60W incandescent light bulb lasts 1,000 hours, or about a month and a half of continuous use. Just under half a year if you turn the light off during the day. The average LED bulb with the same amount of visible light lasts over 100,000 hours of continuous use or 12 years, not even accounting for turning it off when not in use. Stop taking your crazy pills. This is all before you factor in that incandescent bulbs require a vacuum or inert gas to function. LED lights do not, and are therefore more resilient.
You can always install heating elements in the place of the old incandescents. You get more light and more heat for less cost. There are even LED lights meant to emit infrared for heat.
@@john_titor1 please tell me what brand and where you are buying LED bulbs that actually last 12 years. I've bought all kinds of LED bulbs and the longest one has lasted was about 2 years. I've had incandescent bulbs last several years longer. Surprisingly the cheap Walmart brand LED bulbs last longer than more expensive ones.
As a kid I didn't really like science and it was always confusing but Neil explains things so clearly. I would truly like to know if I could understand him if I were that middle school boy again.
and are made from recyclable components, aren't plastic and chinese made circuits and diodes, aren't terrible to dispose of or manufacture or use, but ya know, "green energy".
I’m an electrician and have been in the trade for over 25 years now. I’ve seen the transition from incandescent to compact fluorescent to led. The compact fluorescent used less than the incandescent and the led uses less than the compact fluorescent. The actual led doesn’t get hot but the “driver” that powers it does get hot. I always pictured a type of self sustaining powered lighting as the next generation. Something like nuclear powered lighting. They already have certain things that are self contained nuclear powered lighting. They have exit lighting that is nuclear powered. You take it out of the box and literally shake it up and it stays on for over 25 years ! The problem is there is no on off switching for this yet. If they could make it to where every home hard a small nuclear reactor to power it then we wouldn’t need to burn so many fossil fuels. I would assume it has something to do with safety and making it “fool proof”. But yeah led uses 90 % less energy for the same lumen output as incandescent lighting.
Yeah I agree with you, but I'm torn. Incandescents are *made* to burn out, it's how they're designed. Over a lifetime I bet one could save tens of thousands of dollars
If you need more warmth, it’s much more efficient to have something specifically designed for creating warmth to do it rather than relying on something that creates it as a byproduct. What about in the summer when it is already too warm? What about during the night when you probably don’t need the lights to be on? LEDs used to give off too cold light but that was 20 years ago.
